[][MAC80211][misc][correct feeds.conf.default-21.02]

[Description]
Fix typo in feeds.conf.default-21.02

[Release-log]
N/A

Change-Id: I2b06934c9a721d066b31dc704f8fef162d050920
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7634494
2 files changed